README.md update

Added an Example usage

README.md

@@ -14,3 +14,40 @@ Please follow the [install guide](https://rosalindfranklininstitute.github.io/Di
 More than likely, especially in the case where your application is I/O bound, as this will allow you to leverage the RAM on the HPC node as shared storage and thus will more than likely rate limited by the HPC network rate and not the storage write rate. However, DisTRaX can also potentially reduce the time for compute-bound operations that need to read data to do processing, such as [RELION](https://relion.readthedocs.io/), as having the data in the shared RAM will reduce the read time.
 
 DisTRaX can also, in a cloud cluster setting, help reduce cost overheads as if the data fits into the RAM of the compute nodes, it can remove the need for a fast central filesystem.
+
+In short, DisTRaX allows you to use existing compute infrastructure to speed up your software while requiring no changes to your existing software.
+
+## Example
+
+This example shows how easy it is to use DisTRaX with your existing software.
+
+```bash
+#! /bin/bash
+#SBATCH --job-name=distrax_example
+#SBATCH --nodes=2
+#SBATCH --ntasks-per-node=2
+#SBATCH --cpus-per-task=1
+#SBATCH --time=10:00
+
+# Get hostnames
+hostnames=`scontrol show hostnames| sed -n -e 'H;${x;s/\n/,/g;s/^,//;p;}'`
+
+# Get number of hosts
+number_of_hosts=`scontrol show hostnames | wc -l`
+
+# Create Storage System
+mpirun -np $number_of_hosts --host $hostnames distrax_mpi -c distrax.cfg -a create
+
+# Move data to storage cluster
+rsync input_data_location /mnt/distrax/
+
+# Run Application
+./Heavy-IO-application --input_dir /mnt/distrax --output_dir /mnt/distrax
+
+# Move data off storage cluster
+rsync /mnt/distrax permanent_output_data_location
+
+# Remove Storage System
+mpirun -np $number_of_hosts --host $hostnames distrax_mpi -c distrax.cfg -a remove
+
+```